SNP SRY1532/SRY10831 appears twice on the Y-DNA Haplogroup tree. It is
first seen as a mutation SRY1532.1/SRY10831.1 which is reported as a
positive in BT and then reappears as a back mutation SRY1532.2/SRY10831.2
which is reported as a negative in R1a.

Thanks to Jim Wilson, Thomas Krahn, and David F. Reynolds for their
consultation on Haplogroup R.

Y-DNA haplogroup R is believed to have arisen approximately 27,000 years
ago in Asia. The two currently defined sublcades are R1 and R2.

Haplogroup R1 is estimated to have arisen during the height of the Last
Glacial Maximum (LGM), about 18,500 years ago, most likely in southwestern
Asia. The two most common descendant clades of haplogroup R1 are R1a and
R1b. R1a is believed to have arisen on the Eurasian Steppe, and today is
most frequently observed in eastern Europe and in western and central Asia.
R1b is believed to have arisen in southwest Asia and today is most
frequently observed in Europe and especially in western Europe, which it
entered after the LGM largely in the form of R1b1b2. The Atlantic Modal
Haplotype, or AMH, is the most common STR haplotype in haplogroup R1b1b2a.

R2 is most often observed in Asia, especially on the Indian
sub-continent and in central Asia.

Findings:

G1 Has been tested
at (EA) EthnoAncestry for the R1b FT upgrade. Normally a person should test to
see what Haplogroup your
in, but since FTDNA has started almost guaranteeing the prediction of
haplogroups, I chose to do the
up grade only. With the S21, S26, S28, and S29 testing as ancestral, this
indicates that G1 is R1b1c*at
it has no SNPs to identify it. But, now with the finding of S68 as a new SNP, all R1b1c*'s will
have to be tested for it... or loose the *....

Nelda

G7 at FTDNA
has been back bone tested for the I hapolgroup to insure the
haplotype.